Armrest for a chair



FIG. 1 is a perspective view of the armrest for a chair;

FIG. 2 is an exterior side view thereof;

FIG. 3 is an interior side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings are for illustrative purpose only and form no part of the claimed design. 

CLAIM The ornamental design for armrest for a chair, as shown and described. 